Synthese von 2-alkoxysubstituierten Oligo- und Poly(1,4-phenylenethenylen)en und 2-Arylbenzo[b]furanen mit Hilfe der Siegrist-Reaktion
摘要:
Alkylation of 2-hydroxy-4-methylbenzaldehyde (1) yields the 2-alkoxy-4-methylbenzaldehydes (2a-1) which can be easily transformed to the Schiff bases 3a-1. The intermolecular self-condensation in a strongly alkaline medium leads to the oligo- and poly(1,4-phenyleneethenylene)s (4a-i) with an outstanding regular constitution and overall (E)-configuration. The terminal N-arylamino group can be cleaved by hydrolysis generating the compounds 5a-i. An intramolecular condensation forming the benzo[b]furanes 6j,k is observed for 3j,k - due to the activated OCH2 group in 2-position. Finally, both the 4-CH3 as well as the 2-OCH2 group take part in the reaction of 31. The twofold Schiff base 3m. obtained from 1 via 2m, yields the ladder polymer 7m.
[EN] ALKYLAMINE WITH BENZOALICYCLIC SUBSTITUENT AND APPLICATION THEREOF<br/>[FR] ALKYLAMINE AVEC SUBSTITUANT BENZOALICYCLIQUE ET SON APPLICATION<br/>[ZH] 苯并脂肪环取代烷基胺类化合物及其用途
Gattermann, Justus Liebigs Annalen der Chemie, 1907, vol. 357, p. 373
作者:Gattermann
DOI:——
日期:——
[EN] FLAVONOID BASED ANTIVIRAL TARGETS<br/>[FR] CIBLES ANTIVIRALES À BASE DE FLAVONOÏDES
申请人:UNIV CT FLORIDA RES FOUNDATION INC
公开号:WO2014047551A1
公开(公告)日:2014-03-27
The present invention relates to novel compounds for modulating US28 receptor activity and methods for their use in preventing or treating US28 receptor-mediated disorders or conditions.
Synthese von 2-alkoxysubstituierten Oligo- und Poly(1,4-phenylenethenylen)en und 2-Arylbenzo[b]furanen mit Hilfe der Siegrist-Reaktion
作者:H. Meier、H. Kretzschmann、M. Lang
DOI:10.1002/prac.19943360205
日期:——
Alkylation of 2-hydroxy-4-methylbenzaldehyde (1) yields the 2-alkoxy-4-methylbenzaldehydes (2a-1) which can be easily transformed to the Schiff bases 3a-1. The intermolecular self-condensation in a strongly alkaline medium leads to the oligo- and poly(1,4-phenyleneethenylene)s (4a-i) with an outstanding regular constitution and overall (E)-configuration. The terminal N-arylamino group can be cleaved by hydrolysis generating the compounds 5a-i. An intramolecular condensation forming the benzo[b]furanes 6j,k is observed for 3j,k - due to the activated OCH2 group in 2-position. Finally, both the 4-CH3 as well as the 2-OCH2 group take part in the reaction of 31. The twofold Schiff base 3m. obtained from 1 via 2m, yields the ladder polymer 7m.